/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

var _config = require("../../config");

var __DEV__ = _config.__DEV__;

var SeriesModel = require("../../model/Series");

var List = require("../../data/List");

var _util = require("static/plugins/js/zrender/lib/core/util");

var concatArray = _util.concatArray;
var mergeAll = _util.mergeAll;
var map = _util.map;

var _format = require("../../util/format");

var encodeHTML = _format.encodeHTML;

var CoordinateSystem = require("../../CoordinateSystem");

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

/* global Uint32Array, Float64Array, Float32Array */
var Uint32Arr = typeof Uint32Array === "undefined" ? Array : Uint32Array;
var Float64Arr = typeof Float64Array === "undefined" ? Array : Float64Array;

function compatEc2(seriesOpt) {
    var data = seriesOpt.data;

    if (data && data[0] && data[0][0] && data[0][0].coord) {
        seriesOpt.data = map(data, function (itemOpt) {
            var coords = [itemOpt[0].coord, itemOpt[1].coord];
            var target = {
                coords: coords,
            };

            if (itemOpt[0].name) {
                target.fromName = itemOpt[0].name;
            }

            if (itemOpt[1].name) {
                target.toName = itemOpt[1].name;
            }

            return mergeAll([target, itemOpt[0], itemOpt[1]]);
        });
    }
}

var LinesSeries = SeriesModel.extend({
    type: "series.lines",
    dependencies: ["grid", "polar"],
    visualColorAccessPath: "lineStyle.color",
    init: function (option) {
        // The input data may be null/undefined.
        option.data = option.data || []; // Not using preprocessor because mergeOption may not have series.type

        compatEc2(option);

        var result = this._processFlatCoordsArray(option.data);

        this._flatCoords = result.flatCoords;
        this._flatCoordsOffset = result.flatCoordsOffset;

        if (result.flatCoords) {
            option.data = new Float32Array(result.count);
        }

        LinesSeries.superApply(this, "init", arguments);
    },
    mergeOption: function (option) {
        // The input data may be null/undefined.
        option.data = option.data || [];
        compatEc2(option);

        if (option.data) {
            // Only update when have option data to merge.
            var result = this._processFlatCoordsArray(option.data);

            this._flatCoords = result.flatCoords;
            this._flatCoordsOffset = result.flatCoordsOffset;

            if (result.flatCoords) {
                option.data = new Float32Array(result.count);
            }
        }

        LinesSeries.superApply(this, "mergeOption", arguments);
    },
    appendData: function (params) {
        var result = this._processFlatCoordsArray(params.data);

        if (result.flatCoords) {
            if (!this._flatCoords) {
                this._flatCoords = result.flatCoords;
                this._flatCoordsOffset = result.flatCoordsOffset;
            } else {
                this._flatCoords = concatArray(
                    this._flatCoords,
                    result.flatCoords
                );
                this._flatCoordsOffset = concatArray(
                    this._flatCoordsOffset,
                    result.flatCoordsOffset
                );
            }

            params.data = new Float32Array(result.count);
        }

        this.getRawData().appendData(params.data);
    },
    _getCoordsFromItemModel: function (idx) {
        var itemModel = this.getData().getItemModel(idx);
        var coords =
            itemModel.option instanceof Array
                ? itemModel.option
                : itemModel.getShallow("coords");
        return coords;
    },
    getLineCoordsCount: function (idx) {
        if (this._flatCoordsOffset) {
            return this._flatCoordsOffset[idx * 2 + 1];
        } else {
            return this._getCoordsFromItemModel(idx).length;
        }
    },
    getLineCoords: function (idx, out) {
        if (this._flatCoordsOffset) {
            var offset = this._flatCoordsOffset[idx * 2];
            var len = this._flatCoordsOffset[idx * 2 + 1];

            for (var i = 0; i < len; i++) {
                out[i] = out[i] || [];
                out[i][0] = this._flatCoords[offset + i * 2];
                out[i][1] = this._flatCoords[offset + i * 2 + 1];
            }

            return len;
        } else {
            var coords = this._getCoordsFromItemModel(idx);

            for (var i = 0; i < coords.length; i++) {
                out[i] = out[i] || [];
                out[i][0] = coords[i][0];
                out[i][1] = coords[i][1];
            }

            return coords.length;
        }
    },
    _processFlatCoordsArray: function (data) {
        var startOffset = 0;

        if (this._flatCoords) {
            startOffset = this._flatCoords.length;
        } // Stored as a typed array. In format
        // Points Count(2) | x | y | x | y | Points Count(3) | x |  y | x | y | x | y |

        if (typeof data[0] === "number") {
            var len = data.length; // Store offset and len of each segment

            var coordsOffsetAndLenStorage = new Uint32Arr(len);
            var coordsStorage = new Float64Arr(len);
            var coordsCursor = 0;
            var offsetCursor = 0;
            var dataCount = 0;

            for (var i = 0; i < len; ) {
                dataCount++;
                var count = data[i++]; // Offset

                coordsOffsetAndLenStorage[offsetCursor++] =
                    coordsCursor + startOffset; // Len

                coordsOffsetAndLenStorage[offsetCursor++] = count;

                for (var k = 0; k < count; k++) {
                    var x = data[i++];
                    var y = data[i++];
                    coordsStorage[coordsCursor++] = x;
                    coordsStorage[coordsCursor++] = y;

                    if (i > len) {
                    }
                }
            }

            return {
                flatCoordsOffset: new Uint32Array(
                    coordsOffsetAndLenStorage.buffer,
                    0,
                    offsetCursor
                ),
                flatCoords: coordsStorage,
                count: dataCount,
            };
        }

        return {
            flatCoordsOffset: null,
            flatCoords: null,
            count: data.length,
        };
    },
    getInitialData: function (option, ecModel) {
        var lineData = new List(["value"], this);
        lineData.hasItemOption = false;
        lineData.initData(
            option.data,
            [],
            function (dataItem, dimName, dataIndex, dimIndex) {
                // dataItem is simply coords
                if (dataItem instanceof Array) {
                    return NaN;
                } else {
                    lineData.hasItemOption = true;
                    var value = dataItem.value;

                    if (value != null) {
                        return value instanceof Array ? value[dimIndex] : value;
                    }
                }
            }
        );
        return lineData;
    },
    formatTooltip: function (dataIndex) {
        var data = this.getData();
        var itemModel = data.getItemModel(dataIndex);
        var name = itemModel.get("name");

        if (name) {
            return name;
        }

        var fromName = itemModel.get("fromName");
        var toName = itemModel.get("toName");
        var html = [];
        fromName != null && html.push(fromName);
        toName != null && html.push(toName);
        return encodeHTML(html.join(" > "));
    },
    preventIncremental: function () {
        return !!this.get("effect.show");
    },
    getProgressive: function () {
        var progressive = this.option.progressive;

        if (progressive == null) {
            return this.option.large ? 1e4 : this.get("progressive");
        }

        return progressive;
    },
    getProgressiveThreshold: function () {
        var progressiveThreshold = this.option.progressiveThreshold;

        if (progressiveThreshold == null) {
            return this.option.large ? 2e4 : this.get("progressiveThreshold");
        }

        return progressiveThreshold;
    },
    defaultOption: {
        coordinateSystem: "geo",
        zlevel: 0,
        z: 2,
        legendHoverLink: true,
        hoverAnimation: true,
        // Cartesian coordinate system
        xAxisIndex: 0,
        yAxisIndex: 0,
        symbol: ["none", "none"],
        symbolSize: [10, 10],
        // Geo coordinate system
        geoIndex: 0,
        effect: {
            show: false,
            period: 4,
            // Animation delay. support callback
            // delay: 0,
            // If move with constant speed px/sec
            // period will be ignored if this property is > 0,
            constantSpeed: 0,
            symbol: "circle",
            symbolSize: 3,
            loop: true,
            // Length of trail, 0 - 1
            trailLength: 0.2, // Same with lineStyle.color
            // color
        },
        large: false,
        // Available when large is true
        largeThreshold: 2000,
        // If lines are polyline
        // polyline not support curveness, label, animation
        polyline: false,
        // If clip the overflow.
        // Available when coordinateSystem is cartesian or polar.
        clip: true,
        label: {
            show: false,
            position: "end", // distance: 5,
            // formatter: 标签文本格式器，同Tooltip.formatter，不支持异步回调
        },
        lineStyle: {
            opacity: 0.5,
        },
    },
});
var _default = LinesSeries;
module.exports = _default;
